808380677640 has 128 divisors (see below), whose sum is σ = 2446419231360. Its totient is φ = 213684301824.

The previous prime is 808380677593. The next prime is 808380677641. The reversal of 808380677640 is 46776083808.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (808380677641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6938347 + ... + 7053893.

It is an arithmetic number, because the mean of its divisors is an integer number (19112650245).

Almost surely, 2^808380677640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808380677640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223209615680).

808380677640 is an abundant number, since it is smaller than the sum of its proper divisors (1638038553720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808380677640 is a wasteful number, since it uses less digits than its factorization.

808380677640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116071 (or 116067 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 808380677640 in words is "eight hundred eight billion, three hundred eighty million, six hundred seventy-seven thousand, six hundred forty".